JPH0420751Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Field of Application] This invention relates to a top frame used for pallet packaging so that cargo can be efficiently handled by a forklift or the like during cargo handling, transportation, and storage. [Conventional technology] As a technique for efficient cargo handling, transportation and storage, objects are grouped into fixed units, placed on pallets, packed together as a pallet, and lifted and lowered by, for example, inserting the fork of a forklift into the fork insertion hole of the pallet. This has been widely practiced for a long time. The palette is Palette 1 shown in Figure 13.
Double-sided, two-way, wingless type such as 01 is widely used, and the method of pallet packing is shown in Fig. 14 and Fig. 1.
As shown in Fig. 5, objects 102 to be packaged, such as a large number of empty cans, are stacked in multiple stages on a pallet 101. At this time, separate sheets 107 such as cardboard are inserted between adjacent stages, and the topmost stage is A plate-shaped top frame 103 is placed on the object to be packed,
With the group of objects to be packaged 102 sandwiched between the pallet 101 and the top frame 103, they are tied together with a band 104, and if necessary, the whole is covered with a heat-sensitive shrinkable resin film and subjected to heat shrinkage treatment. This completes the packaging. [Problem to be solved by the invention] In such pallet packaging, the pallet 101 is generally a rectangle with the side where the fork insertion opening 106 opens as the long side 101a and the side in the fork insertion direction 114 as the short side 101b. None, the band 104 is tied by hanging the band 104 perpendicularly to the long side 101a at three locations on the left and right positions of the inserted fork, that is, at both ends and the center on the long side 101a. In such a pallet package 105,
As a result of the long side of the top frame 103 being restrained by the band 104 and deforming downward, the short side, particularly the central portion 103c (the first
(Fig. 6) is not restrained by the band, and the long sides are bound by the band 104, resulting in distortion, and the central part 103c becomes the object to be packed 102.
It emerges from the group (Fig. 15), resulting in the central part 10
3c becomes unable to restrain the objects to be packed 102, and in particular, some of the objects to be packed in the uppermost row may be removed from the pallet packing object 105 during transportation or handling, or when removing the top frame or film to unpack the pallet packing. Some items may fall off and become soiled or damaged, and a solution to this problem is desired.
These problems also occur when the pallet or top frame is square rather than rectangular in plan view. This invention was made in view of the above circumstances, and it is possible to prevent the accident of falling of the packaged objects at the peripheral edge of the side where the band is not applied when the objects are bundled with a band, and has a structural structure. To provide a top frame that is easy to use, requires a small number of constituent members, and allows smooth strapping. [Means for Solving the Problems] Corresponding to this purpose, the top frame of this invention includes an outer frame portion that goes around the outline of a rectangle, and a top frame that is connected to the outer frame portion inside the outer frame portion. and a support bone portion for reinforcing the outer frame portion, the outer frame portion having two side portions in one direction and two side portions in the other direction, the side portions in the other direction being attached to the side portions in the one direction. The shape has a curved portion that protrudes in one direction in the thickness direction in a portion other than the nearest two ends, and the amount of protrusion in the curved portion is from both ends in a direction parallel to the other side toward the center. It is characterized in that it increases from the inner side toward the outer edge and in the direction parallel to the one side, and reaches its maximum at the center. [Function] When using the top frame constructed in this manner, it is placed on a group of objects to be packed with the side from which the curved portion protrudes downward, and the band is tied parallel to the short side. Then, the force of the band pushes the long side downward. This means that when viewed from the side of the short side, both ends of the short side are pushed down, and even if the central part is pushed up by the reaction, the downward protrusion of the curved part is canceled out, and the short side The lower surface of the section is only straight, and no gap is created between the lower surface and the group of objects to be packed, thereby restraining the objects to be packed and preventing them from falling off. [Example] Hereinafter, details of this invention will be explained with reference to drawings showing an example. In FIG. 1a, FIG. 1b, FIG. 1c, FIG. 2, and FIG. 3, 1 is a top frame. The top frame usually has a square or rectangular shape in plan view, but the following embodiments will be explained using a rectangular top frame as an example. The top frame 1 is made of plastic, and includes an outer frame 2 that goes around the outline of a rectangle, and a cross shape formed by connecting the opposing long sides 3, 3 and short sides 4, 4 of the outer frame 2. A supporting bone portion 5 is integrally molded to form a plate-like outer shape. The lower surface of the long side 3 is flat over its entire length when viewed in the long side direction 6, and there is only a slight step 8 between the outer edge 3a and the inner edge 3b. On the other hand, the lower surface of the short side portion 4, which is the edge portion of the short side, is not flat in the direction 7 of the short side, but has a curved portion 10 that projects downward. That is, the curved portion 10 is roughly shown as the outer portion of the chain line 10a in FIG. (5th
, 6, 7, and 8), and the amount of protrusion is not uniform over the entire length of the short side 4, and even within the short side 4 from both ends 4a to the center 4b.
The short side 4 as a whole forms a curved portion 10 that projects downward toward the bottom surface, and the amount of protrusion toward the bottom surface gradually increases until the center portion 4b of the short side portion 4 protrudes the most. A slight step 11 is also formed on the short side 4, and the outer edge 4d projects slightly outward from the inner edge 4c and forms a lower surface flush with the outer edge 3a of the long side 3. The steps 8 and 11 are for making the top frame easier to handle. Ribs 12, 13, and 14 in the direction 7 are formed to protrude upward on the upper surface of the short side 4 for reinforcement, and are located at the inner edge, outer edge, and center of the short side 4, respectively. Furthermore, ribs 15, 16, 17, 19 in the direction 6 are formed by connecting the ribs 12, 13, 14 for reinforcement, and each rib 15, 16, 17 has a portion 15a, 16a, 17a connecting the ribs 12, 14. Rib 14,1
The portions 15b, 16b, and 17b that connect 3 have downward steps on their upper surfaces. In addition, in FIGS. 9 to 12, 18, 2
1, 23 and 24 are reinforcing ribs, 20 and 22 are reinforcing parts, and 25 is a band locking part. Here, the amount of protrusion of the curved part 10 is, for example, the length of the short side is 1130 mm, the width is 102 mm, the plate thickness is 8 mm, the rib height is 16 mm, the rib width is 10 mm, the constituent material is polypropylene, the inner position adjacent to the inner edge of the short side When the binding force is 2 kg, the central part 4 of the short side 4
The protrusion amount of b can be about 5 mm to 8 mm,
In this case, while preventing the objects to be packed from falling off, the stackability of the top frame itself is also reduced.
1a (see Figures 4 and 5). In the example described above, the curved portion 10 is formed at the edge of the short side of the rectangular top frame, but it can also be formed at the edge of the long side 3. It can also have a square top frame. When the top frame 1 configured in this manner is placed on top of a group of objects to be packed and tied with a band around the chamfered portion 25 of the long side 3, the long side 3 is pushed down over its entire length. As a result, both end portions 4a of the short side portion 4 are pushed down, and as a reaction, the center portion 4b of the short side portion 4 is pushed upward and deformed in a direction away from the group of objects to be packed. This amount of deformation is greatest at the center of the short side portion 4. However, this part is configured as a curved part 10 and originally has a distance of H
The amount of protrusion increases from both ends of the shorter side toward the center, and the amount of protrusion increases from the inner part toward the outer edge, just like the brim of a hat. Therefore, the deformation only causes the curved part 10 to become straight (Fig. 1c), and the top frame 1 does not rise up and separate from the group of objects to be packed. The restraint by the short side of the object at the position corresponding to the short side is maintained, and the object to be packed does not fall off. Furthermore, this top frame is constructed in one piece,
Since there is no need to combine other members to provide deformation, the structure is simple and easy to manufacture, and there is no need to increase the number of constituent members. In addition, in the top frame of this invention, both ends of the short sides that are closest to the long sides are not curved, so the curved shape of the short sides does not affect the shape of the long sides. The curved shape provided on the side portions does not adversely affect the banding operation performed on the long sides, and the banding operation can be performed smoothly. [Experimental Example] The following table shows the results of 5 types of tests shown in the test items on the 3 types of top frames shown in the test top frames. The test product and the test product are related to the embodiment of this invention, and the numerical value (3.5 to 4) or (1) indicates the amount of protrusion of the curved portion at the outer center portion 4b of the short side portion. It can be seen from this table that the number of dropped cans for the test product is extremely low compared to the current product. Test top frame Test product (3.5 to 4) Test product (1) Current product Test items Palletizer - Banding, falling cans, can protrusion visual inspection Band binding force measurement Short side (deflection) measurement Flange deformation investigation (approximately 400 kg load ) Vibration drop can check [on a forklift] Experimental results

[Table] [Effects of the invention] As described above, according to this invention, when the object to be packed and the top frame are tied together with the band,
To obtain a top frame that can reliably prevent an accident of falling of a packaged object at the peripheral edge of the side where the band is not applied, has a simple structure, and requires a small number of structural members.

[Brief explanation of the drawing]

Fig. 1a is a perspective explanatory view exaggerating the curved part of the top frame shown in Fig. 2, and Fig. 1b is a perspective view of the top frame shown in Fig. 2.
Figure a is a side view, Figure 1c is a side view showing the top frame shown in Figure 1a being banded after being set on the top of the group of objects to be packed, and Figure 2 is an embodiment of this invention. 3 is a sectional front view of the half of the top frame shown in FIG. 2 taken along line AA, and FIG. 4 is a sectional side view taken along line BB of the half of the top frame shown in FIG. 2. , FIG. 5 is a sectional view taken along the line C-C in FIG. 2, FIG. 6 is a sectional view taken along the line D-D in FIG. 2, FIG. 7 is a sectional view taken along the line E-E in FIG. 2, and FIG. F- in Figure 2
9 is a sectional view of the section GG in FIG. 2, FIG. 10 is a sectional view of the section H-H in FIG. 2, FIG. 11 is a sectional view of the section I-I in FIG. 10, FIG. 12 is a sectional view of J-J section in FIG.
Figure 13 is a perspective view showing the pallet, Figure 14 is a front explanatory view showing the pallet package, and Figure 15 is the first
FIG. 4 is an explanatory side view of the pallet package, and FIG. 16 is an enlarged view of section K in FIG. 15. 1...Top frame, 2...Outer frame, 3...
Long side part, 4... Short side part, 5... Support bone part, 6... direction, 7... direction, 8... step, 10... curved part,
11...Step, 11a...Step, 12,13,1
4...Rib, 15,16,17...Rib, 18,
19, 21... Rib, 20, 22... Reinforcement part, 2
3, 24...rib, 25...band locking part.

Claims (1)

[Scope of utility model registration request] It has an outer frame part that goes around the outer frame drawing a rectangular outline, and a support part that is located inside the outer frame part and connects with the outer frame part to reinforce the outer frame part, and the outer frame part has two parts. It consists of one side in one direction and two sides in the other direction, and the other side has a curved part whose shape protrudes in one direction in the thickness direction, except for both ends nearest to the one direction side. The amount of protrusion in the curved portion increases from both ends in a direction parallel to the other side toward the center, and from the inner side toward the outer edge in a direction parallel to the one side. The top frame is characterized by an increase in the value as it goes up to the top and reaches a maximum in the center.